Finding the Fourth Proportional to 3,146.69, 4,721.54 and 2,228.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,146.69 : 4,721.54 = 2,228.15 : x
2. Step 2: Convert to fraction form
   3,146.69/4,721.54 = 2,228.15/x
3. Step 3: Cross multiply
   3,146.69x = 4,721.54 × 2,228.15
4. Step 4: Simplify right side
   3,146.69x = 10,520,264.60
5. Step 5: Solve for x
   x = 10,520,264.60/3,146.69
6. Step 6: Final answer
   x = 3,343.28